What are Adyen integration services?

Adyen integration services connect Adyen’s payments platform to your product, covering API and checkout implementation, payment method setup, webhooks, merchant onboarding, settlement and reconciliation, and the links into billing, CRM, and accounting. SPD Technology, an official Adyen service partner, delivers this work for payment platforms, marketplaces, and enterprise merchants.

Is Adyen a payment processor or a payment gateway?

Both. Adyen combines the gateway that accepts payment data, the processing and risk layer, and in many markets acquiring, inside one platform. That is why a single Adyen payment gateway integration can replace several separate providers, and why reporting and settlement come from one source.

Are Adyen and Stripe the same?

No. Both are full-stack payment platforms with APIs for online and in-person payments, and they differ in typical customers, onboarding, pricing models, and product scope. Adyen focuses on large merchants and platforms with unified commerce needs, while Stripe is widely used by startups and smaller businesses as well as enterprises. The right choice depends on volume, markets, payment methods, and the platform model.

How can I integrate an Adyen payment gateway?

Set up the account structure, choose an integration flow, implement the client UI with drop-in or components, handle webhooks, test in the test environment, and then complete Adyen’s go-live checklist. Adyen recommends the sessions flow as the default, with the advanced flow where more server-side control is needed. Platforms that pay out sub-merchants also integrate Adyen for Platforms onboarding and payouts.

How long does Adyen integration take?

A standard online checkout with a few payment methods typically takes weeks. Integrations that add platform onboarding and payouts, multiple processors, token migration, or custom settlement take several months and are delivered in phases. Work continues after go-live, where routing rules, method coverage, and merchant risk management need tuning against real transaction patterns.

Can Adyen run alongside our existing payment processor?

Yes. Many platforms add Adyen next to an incumbent processor and move merchants or traffic across in stages. That requires a routing layer, separate certification per processor, and reconciliation that understands both data models. SPD Technology built this setup for Poynt with Adyen and Elavon.

What does Adyen for Platforms add for marketplaces and SaaS platforms?

It lets a platform onboard its users as account holders, have Adyen verify them through KYC, split payments between users and the platform, and pay funds out. The integration work sits in the onboarding experience, account structure, split rules, and payout reconciliation, where our PayFac platform development work overlaps.

What payment methods does Adyen support?

Cards including Visa, Mastercard, and American Express; digital wallets such as Apple Pay, Google Pay, and PayPal; bank transfers; and a long list of local methods by country. Availability depends on the market and the account setup, so Adyen’s payment methods documentation is the current reference. Enabling local methods follows the same process as our alternative payment methods development practice.

Adyen Integration Services for Enterprises

As an official Adyen service partner, SPD Technology connects Adyen to live payment platforms, marketplaces, and enterprise checkouts. We handle everything from APIs and checkout to onboarding, settlement, and multi-processor setups, drawing on our proven experience integrating Adyen for platforms processing over $140M in monthly volume.

SPD Technology
Adyen Integration Services for Enterprises

Why Payment Teams Consolidate on Adyen

Payment teams rarely move to Adyen for a single reason. These are the six situations that come up most often when a platform decides to consolidate.

Too many gateways. Each provider maintains its own API, reporting format, and settlement files, so every change has to be implemented several times over.
Payment methods missing in key markets. Each additional local method requires a separate contract and a separate integration with another provider.
Online and in-store on separate rails. Card-present and online payments cannot be tokenized or reported together.
Reconciliation handled in spreadsheets. Settlement data arrives in different formats and on different schedules, which delays the financial close.
Limited insight into declines. Authorization and fraud decisions sit with different vendors, making root causes difficult to trace.
Platform payments that outgrew the setup. Paying out sellers or sub-merchants requires onboarding, KYC, and split payments the current stack cannot support.

Scaling globally requires a payment platform built for multi-currency transactions, global payment methods, and reliable payment processing. As an official Adyen service partner, we handle that work end to end, from architecture review through certification and go-live.

Where Adyen Integrations Go Wrong and How We Prevent It

Most of the risk in an Adyen integration sits in the seams between Adyen and the platform it joins.

Unreliable Webhook Handling
Payment status lives in Adyen notifications, so the integration is only as reliable as the code receiving them. Without HMAC verification, idempotent processing, and a retry path, orders sit in a pending state or ship twice. That is why we build notification handling as a first-class service with replay and monitoring.
Event-Driven Reporting vs. Batch Settlement
Adyen reports payment and settlement events continuously, while a legacy settlement system usually expects a daily file. At Poynt, we redesigned the settlement so that Adyen events and the incumbent processor’s data reconcile inside one model, which is what lets both processors run against the same books.
Saved Cards Left Behind
Moving from another PSP can strand stored cards and active subscriptions at the moment of cutover. We plan token migration with both providers in advance, map customer and subscription identifiers across the two systems, and run a test batch so recurring payments keep going through.
Running Two Processors at Once
Adyen often joins an incumbent processor rather than replacing it outright. We add the routing layer, run certification separately for each processor, and bring reporting back together, so merchants move across in stages instead of in a single cutover weekend.
SCA and 3D Secure Friction
Misconfigured authentication can increase decline rates or drive exits from the checkout process, depending on the market. After setting up 3DS2 and exemptions for each market, we test the flow using real devices and inconsistent in-app browsers. This happens before we send any traffic to the application.
Sub-Merchant Onboarding as an Afterthought
Platform models need KYC, account holders, and payouts working from the first day they take money. We design the onboarding flow around what Adyen requires of a platform, so verification status reaches your systems and sub-merchants can be paid out without manual intervention.

Before and After Adyen Integration

Payment stacks tend to grow one provider at a time, a gateway added here and a tool there. The pairs below describe what changes in the architecture once Adyen is in place.

From Fragmented Payment Data
Payments, refunds, and chargebacks live inside whichever provider handled them, so no system holds the full record.
To One Transaction Record
Payments, refunds, chargebacks, and settlements are linked by a single reference that every downstream system can follow.
From Several Gateway Integrations
Each gateway brings an API, a release cycle, and a set of edge cases that the team carries separately.
To One Adyen Integration Layer
One integration layer replaces the separate release cycles and edge cases each gateway carried.
From Declines Without Root Cause
Refusal reasons stop at the gateway, so you can’t tell an issuer decline apart from a risk rule.
To Visible Authorization Data
Refusal reasons, 3DS outcomes, and risk scores are logged and reported per market and per payment method.
From Manual Reconciliation
Settlement files arrive in different formats on different days and are manually matched to orders.
To Automated Settlement Matching
Settlement reports and webhooks are matched against orders and payouts automatically, with exceptions queued for finance.
From Limited Payment Methods
Entering a new market means sourcing a provider for that market first, then contracting, integrating, and certifying with them before a single transaction can be taken.
To Methods Activated Per Market
Cards, wallets, and local methods are enabled from one account structure as a configuration step.
From Separate Online and In-Store Payments
Terminal payments and online payments run on different rails and are reported separately.
To Unified Commerce Setup
Online and terminal payments sit under one account structure with shared tokenization and reporting.

Why Choose SPD Technology for Adyen Integration Services

SPD Technology integrates Adyen into complex fintech and commerce platforms, focusing on the payment architecture around the integration rather than just the API connection. That is the same engineering behind our payment software development practice.

Fintech and Payment Engineering Expertise
We review transaction flows and authorization logic before writing any code, which is where our payment system architecture consulting work begins. At Poynt, that scope covered the payments API, settlement, tokenization, a hosted gateway, and a virtual terminal.
Adyen Next to Your Existing Processors
Adyen rarely arrives on an empty platform. We integrated and certified Adyen at Poynt while Elavon stayed live, redesigning the processor module to work with more than one acquirer, which is the pattern behind our payment orchestration platform development work.
PayFac and Platform Models
Platform payments change what settlement has to do because funds must split and land across a hierarchy of accounts. We redesigned Poynt’s settlement for hierarchical sub-merchants, the groundwork that PayFac platform development depends on.
Security and Compliance
Tokenization, least-privilege access, and fraud tooling are configured inside Adyen, with PCI DSS scope deliberately kept narrow. That work runs in tandem with the platform-side fraud detection software development we deliver.
Integration With the Back Office
Payment events have to reach the systems that bill, invoice, and report. At Poynt, our billing software development kept subscription, usage-based, and tiered plans in real-time sync with CRM, accounting, and merchant management.
Long-Term Ownership
Five years with Poynt, including Level 3 support and monitoring, and thirteen years with PitchBook. Teams stay on the product past go-live, when routing rules and method coverage start needing attention.

SPD Technology is an official Adyen service partner. Explore our partner page for direct verification.

Value-Based Outcomes We Delivered to Our Global Clients

SPD Technology engineers work on systems that process payments, manage partners, and handle large datasets. These outcomes reflect what those platforms deliver at scale.

Adyen certified
Integrated and certified as a strategic processor alongside the incumbent processor
See Case Study
0 manual steps
Merchant onboarding automated through webhooks on API Gateway, Lambda, and SQS
See Case Study
PayFac-ready architecture
Settlement redesigned for PayFac transactions and hierarchical sub-merchants via Adyen
See Case Study
2-year decoupling
Reseller portal extracted from the monolith to support more providers and resellers
See Case Study

Success Stories with Global Impact

SPD Technology designs and develops transformative software solutions that drive innovation, new revenue streams, and market leadership.

See All Cases

Creating a Unified Platform for Seamless Private Investment Management

Industry: Finance, Payments & Fintech
Country: USA
Team Size: 5

Scalable Data Ingestion Service: Successfully developed a scalable data ingestion service, enabling near real-time data retrieval from diverse 3rd party providers including Newscatcher, Owler, and S&P.
Appealing Contemporary UI/UX: The SPD Technology team developed a new contemporary, visually appealing, and comprehensive design. This redesign enhances user experience and aligns with modern design standards.

View Case Study

Developing a B2B Legaltech Solution for a LATAM Startup

Industry: LegalTech
Country: Mexico
Team Size: 8

Modern AI-Powered Web Platform: A highly customized software solution we created resulted in significant cost savings, groundbreaking functionality, and limitless scalability compared to an existing legacy platform.
Improved Speed of Document Processing: Our AI/ML model helps the employees of a client to extract needed information from documents much faster. Human experts only need to correct and check the model’s results. The AI/ML models are in the constant enhancement process with continuous data labeling, so the speed of document processing will only improve over time.

View Case Study

First Free-To-Play Golf Game With PGA Data

Industry: Marketing
Country: USA
Team Size: 4

Feature Completion and Bug Resolution:
Successfully completed all missing features, including PGA integration, within the stipulated time frame. Resolved existing bugs promptly and effectively.
Performance, Scalability, and Maintainability Improvements:
Enhanced overall performance, achieving a remarkable app response time of less than 2 seconds. Improved scalability, enabling the app to seamlessly handle 1000 requests per second. Ensured the application’s maintainability for easy incorporation of future features.

View Case Study

Adding Adyen to a platform that already processes payments? We will map the integration, certification, and cutover plan with you.

Platforms Where We Implement Adyen

Each platform type puts a different part of Adyen under load, so the integration work differs.

eCommerce Checkout
Online payments run through the sessions flow or the advanced flow, with drop-in or components on the front end, and they carry wallets and local methods. Our eCommerce development engineers map checkout and routing before configuration starts.
Marketplaces and Platforms
Adyen for Platforms brings account holders, KYC onboarding, split payments and payouts, and the work sits in the onboarding UX and the split rules. We redesigned PayFac settlement at Poynt, which is the same ground our PayFac platform development work covers.
Subscription and SaaS
Recurring payments rest on stored tokens, retry and dunning logic, and a billing system that agrees with the payment events. At Poynt, we built subscription, usage-based, and tiered billing software development against exactly that.
Mobile and In-App
Native SDKs with Apple Pay and Google Pay keep authentication on the device, where checkout succeeds or fails in a second. Wallets were integrated at Poynt by the same team that handles our mobile app development work.
POS and In-Person
Card-present payments share tokens and reports with the online channel instead of running as a separate system, which is where POS software development services meet the payment platform. Poynt omnicommerce terminals are the reference point.
Payment Platforms and PSPs
Adyen takes its place as one processor behind a routing layer rather than the only one. Poynt ran Adyen and Elavon together, and our payment gateway integration services are built around that configuration.

Payment Methods We Configure on Adyen

SPD Technology implements Adyen integrations that let businesses accept payments across global markets. Below is what we configure for each method and what we test before it goes live.

Card Payments (Visa, Mastercard, Amex)
Cards carry most of the volume, so we set authorization logic, routing rules, and currency handling per network rather than once. Testing covers authorization, partial capture, refunds, and the decline codes each network returns.
Bank Transfers
Bank transfers confirm asynchronously, which breaks any fulfillment logic that assumes an instant result. We configure confirmation handling and settlement timing per method, then deliberately test the gap between order and confirmed payment.
Google Pay and Apple Pay
Wallet payments depend on domain and merchant verification being right before anything reaches a shopper. We handle that setup inside Adyen first, then test on real devices, including the in-app browsers that handle wallet sheets inconsistently.

Digital Wallets
Each wallet has its own authentication path and refund behavior, so we can’t enable any on the assumption that it behaves like a card. That means configuring each one separately and testing to confirm that refunds and chargebacks reconcile the same way card payments do.
PayPal
PayPal runs through Adyen on the same infrastructure as cards, with different dispute and refund mechanics underneath. We check its transaction and settlement logic separately, because those differences surface in reconciliation rather than at checkout.
Local Payment Methods
Regional markets often use methods with no card equivalent. We assess which ones matter per market and activate them through Adyen, drawing on the same alternative payment methods development work we do outside the Adyen platform.

Our Adyen Integration Services: From Account Setup to Go-Live

The setup work that takes an Adyen account from empty to processing live traffic.

01 · Adyen Account Configuration
Account structure is hard to change once transactions are flowing, so it gets decided first against the business model, currencies, and merchant hierarchy.
You get
Company and merchant account hierarchy, currencies, and settlement setup documented.
02 · Setup for Business Operations
Settlements, payouts, and reporting are configured to match how finance already works, and the notification endpoints are built to survive retries.
You get
Settlement, payout, and reporting configuration, plus webhook endpoints with HMAC verification.
03 · Merchant Onboarding Support
Platforms that bring on sub-merchants need registration, verification, and activation to work as one flow, which is exactly what ou merchant onboarding solutions cover.
You get
Hosted or API-based KYC onboarding flow for sub-merchants, with status synced back to your platform.
04 · Checkout Configuration
Checkout is where the integration flow, UI components, and authentication meet, and you choose each one per use case rather than by default.
You get
Sessions or advanced flow implementation, drop-in or components UI, and 3DS2 configuration.
05 · Payment Methods Configuration
The mix follows the markets you sell into and is set against local preference and regulation, drawing on our alternative payment methods development work.
You get
Methods activated per market with test evidence.
06 · Security and Compliance Setup
We tune risk controls to match the friction they add at checkout, and we keep PCI DSS scope as narrow as the architecture allows.
You get
Risk rules configured, tokenization in place, access controls set, and PCI DSS scope documented.
07 · Integration with Backend Systems
An integration is finished only when the rest of the platform agrees with it, from order management through to the ledger.
You get
Orders, billing, CRM, and accounting synced to payment events.
08 · Testing, Certification, and Go-Live
The last stretch is where a certification gap or missing rollback turns into a delayed launch, so we plan it as its own phase.
You get
Test-environment scenarios, processor certification support, go-live checklist completion, and a staged traffic cutover with rollback.

Trusted Globally by Innovation-Driving Companies

From Fintech industry stalwarts to industry-leading eCommerce providers, we ensure the comprehensive alignment between emerging technologies and established business processes.

An American financial services firm that provides investment research and investment management services
Financial data and software company with offices in London, New York, San Francisco, and Seattle.
All-in-one omni commerce payment solution with contactless, fast, secure, and safe payment processing
One of the most recognizable landmarks, a company that specializes in innovative travel and hospitality services
SaaS XSPN – Next Generation Application & Cloud Security Posture Management
A leading tech-enabled insurance company that provides workers’ comp coverage to small businesses
A UK-based provider of online payment solutions to businesses of all sizes worldwide

Certified

By Independent Organizations

Helping global businesses implement Adyen payment solutions with secure architecture and optimized transaction flows.

Confirmed by Oracle certification, our company provides top-notch tech expertise in building and delivering cutting-edge database and cloud-based apps.

IIBA Certification signifies our proficiency in business analysis, ensuring a deep understanding of client needs and industry requirements.rn

With AWS Certification, we guarantee top-tier cloud expertise, enabling us to architect robust, scalable, and secure solutions.

Trusting your project development to us, you can rely on our project management excellence, meticulous planning, and efficient resource utilization. rn

Our Scrum Alliance Certification demonstrates our dedication to agile methodologies, fostering collaboration and iterative development.rn

Backed by Scrum.org Certification, our development team leverages the best principles of Scrum to build superior and iterative software solutions.

Ready to improve payment processing with an Adyen implementation partner?

Shariq Ahmad

Head of Technology, Morningstar, Inc

All of their developers and technology staff are highly talented and very professional. Working with SPD felt like we were working with an internal team. They are always accessible any time of the day and very flexible in providing support to our users who are globally distributed.

FAQ

Answering common questions on Adyen integration services.

What are Adyen integration services?
Adyen integration services connect Adyen’s payments platform to your product, covering API and checkout implementation, payment method setup, webhooks, merchant onboarding, settlement and reconciliation, and the links into billing, CRM, and accounting. SPD Technology, an official Adyen service partner, delivers this work for payment platforms, marketplaces, and enterprise merchants.
Is Adyen a payment processor or a payment gateway?
Both. Adyen combines the gateway that accepts payment data, the processing and risk layer, and in many markets acquiring, inside one platform. That is why a single Adyen payment gateway integration can replace several separate providers, and why reporting and settlement come from one source.
Are Adyen and Stripe the same?
No. Both are full-stack payment platforms with APIs for online and in-person payments, and they differ in typical customers, onboarding, pricing models, and product scope. Adyen focuses on large merchants and platforms with unified commerce needs, while Stripe is widely used by startups and smaller businesses as well as enterprises. The right choice depends on volume, markets, payment methods, and the platform model.
How can I integrate an Adyen payment gateway?
Set up the account structure, choose an integration flow, implement the client UI with drop-in or components, handle webhooks, test in the test environment, and then complete Adyen’s go-live checklist. Adyen recommends the sessions flow as the default, with the advanced flow where more server-side control is needed. Platforms that pay out sub-merchants also integrate Adyen for Platforms onboarding and payouts.
How long does Adyen integration take?
A standard online checkout with a few payment methods typically takes weeks. Integrations that add platform onboarding and payouts, multiple processors, token migration, or custom settlement take several months and are delivered in phases. Work continues after go-live, where routing rules, method coverage, and merchant risk management need tuning against real transaction patterns.
Can Adyen run alongside our existing payment processor?
Yes. Many platforms add Adyen next to an incumbent processor and move merchants or traffic across in stages. That requires a routing layer, separate certification per processor, and reconciliation that understands both data models. SPD Technology built this setup for Poynt with Adyen and Elavon.
What does Adyen for Platforms add for marketplaces and SaaS platforms?
It lets a platform onboard its users as account holders, have Adyen verify them through KYC, split payments between users and the platform, and pay funds out. The integration work sits in the onboarding experience, account structure, split rules, and payout reconciliation, where our PayFac platform development work overlaps.
What payment methods does Adyen support?
Cards including Visa, Mastercard, and American Express; digital wallets such as Apple Pay, Google Pay, and PayPal; bank transfers; and a long list of local methods by country. Availability depends on the market and the account setup, so Adyen’s payment methods documentation is the current reference. Enabling local methods follows the same process as our alternative payment methods development practice.